Method for improving removal rate of COS and CS2 in natural gas

A natural gas, removal rate technology, applied in CS2 removal rate, improving COS field in natural gas, can solve the problems that absorption-hydrolysis-absorption cannot be used, and it is inconvenient to build new devices, so as to increase the load of the absorption device and reduce the total Sulfur, the effect of improving the degree of removal

Inactive Publication Date: 2020-11-03
SINOPEC NANJING RES INST OF CHEM IND CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned solid catalytic hydrolysis method is more convenient to implement for new purification plants or purification plants with room for expansion and expansion, but for some existing purification plants without enough space, it may be inconvenient to build new ones device, cannot adopt the process flow of absorption-hydrolysis-absorption

Method used

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  • Method for improving removal rate of COS and CS2 in natural gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The test raw material gas and conditions are the same as those of Comparative Example 1, but the filler is loaded with COS and CS by deposition 2 Catalyst packing. The test results are shown in Table 1.

Embodiment 2

[0031] The test raw material gas and conditions are the same as those of Comparative Example 1, but the filler is loaded with COS and CS with a thickness of 50um by impregnation method 2 Catalyst coating. The test results are shown in Table 1.

Embodiment 3

[0033] The pressure of the natural gas used in the test is 2.0MPa, it enters the test device at room temperature, and the volume fraction of the main component of the natural gas is H 2 S 1.0%, CO 2 5.0%, COS 30ppmv, CS 2 20ppmv, the rest is methane. The filler is loaded with COS and CS by deposition 2 Catalyst packing. Other operating conditions are the same as in Comparative Example 1. The test results are shown in Table 1.

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Abstract

The invention belongs to the technical field of gas purification, and aims to provide an improved process for solving the problem that the traditional COS and CS2 catalytic hydrolysis process flow isinconvenient to adopt under the conditions that the removal degree of COS and CS2 is low and the total sulfur content is high in alcohol amine method natural gas purification. In the method, COS and CS2 hydrolysis catalysts are used for modifying a tower plate or filler in a deposition-impregnation or coating mode, wherein the modified tower plate or filler replaces a conventional tower plate or filler, so that the removal degree of COS and CS2 is improved to 80% or above and is nearly one time higher than that of the traditional tower plate or packing; therefore, a good COS and CS2 technicaleffect is achieved. The method provided by the invention is very convenient for technical transformation of high total sulfur and influence on product quality caused by low removal degree of COS and CS2 in the existing alcohol amine method device.

Description

technical field [0001] The invention belongs to the technical field of natural gas purification treatment. It involves a method of improving COS and CS in natural gas 2 method of removal rate. Background technique [0002] As a high-quality, efficient and clean low-carbon energy and chemical raw material, natural gas has become increasingly prominent as a resource. In 2019, global natural gas production increased by 3.4% year-on-year, and global natural gas consumption increased by 3.5% year-on-year, continuing to maintain a relatively high growth level of more than 3%. The IEA predicted in 2019 that global natural gas consumption will continue to grow in the next five years. my country's apparent consumption of natural gas in 2019 increased by 9% year-on-year, and natural gas production increased by 9.9% year-on-year. Although my country's natural gas investment momentum will remain strong, domestic production is still unable to keep up with the leapfrog growth in deman...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/10B01D53/88B01D53/48
CPCB01D53/8603B01D53/8606B01D53/88B01D2257/308C10L3/103
Inventor 周志斌陈园园朱道平余勇杨绪甲宋丽毛松柏
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD
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